Printing-slug.



TTED b TATES PATEN @FFJWE.

WILLIAM R. ALLEN, F CLEVELAND, OHIO, ASSIGNOR TO THE AMERICAN MULTI-GRAPI-I COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

PRINTING-SLUG.

massacre.

Original application filed June 18, 1914, Serial No. 845,758.

Specification of Letters Ifatent.

Divided and this application filed November 2,

1914:. Serial N0. 869,750.

To all whom it may concern:

' exact description,

State of Ohio, and useful Improvement in Printing-Slugs,

of which the following is a full, clear, and

reference being had to the accompanying drawings.

his invention relates to printing slugs adapted to stand a shortheight-to-paper and of a form which may be readily mounted in grooved orslotted holders, as for example the Multigraph drum, slotted typeplates, etc.

The objects of the invention are to provide such a slug in a form whichmay be very cheaply, produced, will hold itself in place while in use,and will receive the printing pressure on thus insuring accuracy ofheight.

This application is a division of my copending application No. 845,753,filed June 18, 1914, which relates to the process of making slugs.

Thepresent invention comprises a slug having a T-head, a shank and acorrugated portion, pressed laterally from the shank somedistance belowthe head and at the bottom of the slug. This corrugated portion, inconjunction with the overhanging head, provides in effect, grooves onthe opposite sides of the slug, w rich hold it in place; at the sametime, the construction admits of the head, which carriesthe printingpres sure, having its original cast form, thus insuring accurateheight-to-paper. It is a characteristic of the corrugated or Wavy ribsformed on the shank, that projections on one side come oppositeindentations on the other. It is possible therefore, not only to insertthe slug lengthwise, like an ordinary grooved slug, but laterally,directly from the side of a. member having a wavy slot, and hold theslug in place by shifting it slightly, lengthwise. The slug isillustrated in the drawings herein and is hereinafter more fullydescribed.

'In the drawings Figure 1 is a perspective an or1ginal cast surface,-

view of my slug;

Fig. 2 is a bottom View thereof; Fig. 3 is a perspective view of thecast primary slug, from whichthe finished slug of Fig. 1 is produced;Fig. 4 is a cross section through suitable mechanism to act on oppositesides of the shank of the primary slug to corrugate it and shear off thelower portion; Fig. 5 is a plan of the corrugating blades of theapparatus shown in Fig. l; Fig. 6 is a vertical section through anapparatus of the Mergenthaler type for casting the slug shown in Fig. 3.

As shown in Figs. 1, 2 and 4, the slug of this invention has anoverhanging head A carrying a line of characters B, and beneath thishead and preferably located centrally thereof, is a flat sided shank C.Adjacent to the lower edge of this shank on opposite sides thereof, arewavy ribsD and D. These ribs come opposite each other and the projectingportions of one rib are opposite the indentations of the other. Thus theribs may be conveniently made by pressure against the opposite sides ofa plane sided shank, by a pair of blades having complementary sinuousedges. Such blades areshown in Fig. 5 and designated 10 and 11. Thesinuous edges of these blades appear at 12 and 13 respectively, fromwhich it will appear that the hump of oneedge comes opposite thedepression of the other.

seen that when such shank is pressed by the blades mentioned, theportions between the blades will be distorted in opposite directions,producing a scalloped or wavy rib on each side of the shank.

Fig. 3 illustrates av primary slug adapted to be cast in a Mergenthaleror similar machine, and thereafter treated to make my finished slug.This primarv slug has a head C in this figure, in-. dicates the shank ofthe slug. It will be.

PatentedDec.29,1i9l-4l.

solid mold having a narrow cavity 22 for the shank of the slug and acommunicating larger cavity 23, for the head. 25 indicates a line ofmatrices adapted to stand against the mold; 26 is a melting pot on theopposite side of the mold, having a jet opening 27, communicating withthe mold space 22. .By such mechanism the slug shown in Fig. 3 may beeasily cast with the regular Morgenthaler apparatus, equipped with asubsti tuted mold. After casting, the slug is ejected and the sides ofthe head trimmed, and it is then ready for treatment to form wavy ribsand to ,shear ofi the shank below the ribs. As the formation of the ribsby pressure from the body of the shank causes the ends of those ribs toproject slightly beyond the original end of the shank, I taper such endof the shank inwardly adjacent to the head, as shown at c, in Fig. 3.Accordingly, projections on the ribs beyond the edge of the shank, do noharm, as such extensions are still less than that of the cast head.

Fig. 4 illustrates a suitable apparatus for corrugating and shearing theshank of the plug shown in Fig. 3. This apparatus consists briefly of apair of corrugating blades 10 and 11, above referred to, a pair ofknives 14 and 15, to which the blades are secured,

a pair of supporting plates 16 and 17 slidably mounted on the blades 10and 11, and

' a pair of centering blocks 18 and 19, which may be rigidly secured tothe knives and the blades 10 and 11, and movably carry the supportingplates 16 and 17. These plates are normally pressed a limited distancetoward each other by springs 30. The parts mentioned maybe mounted intwo holders 31 sides, and the knives I tion is suitably presseddownward.

and 32, which are adapted to be caused to approach or recede from eachother.

' With such an apparatus as described, the holders being a suitabledistance apart, such a slug as shown in Fig. 3 is dropped into placebetween the separated parts, the head resting on and being supported bythe plates 16 and 17; then the holders 31"and32 are caused to approacheach other (the supporting plates moving relatively backward) and theblades 10 and 11 corrugate the shank to produce the wavy ribs onopposite 14 and 15 shear oif the shank immediately below the ribs.During this operation, it is preferable to hold the slug firmly seatedon the plates 16 and 17, by pressure againstits face,--for example by aroller (indicated by the broken line 35) which may be moved out of theway'to allow the slug to be placed, but in opera- Fig. 4 shows the finalposition of the parts,-the knife edges meeting, the blades having movedpast the respective faces of the shank, the plates their outer ends abutfixed stops, and the shank,

having relatively receded until edges of the blocks abutting the sidesof the head.

Such an apparatus as shown more fully in last described is my parentapplication No. 845,753. Essential featuresthereof are 2. A rintin slucom risin a shank a b b D 1 head projecting in opposite directions fromthe shank, and corrugations formed from the body of theshank androjectingin opposite directions and space below the head.

3. A printing slug consisting of a T-head, a shank, and corrugationsadjacent to the lower edge of the shank and formed on opposite sides ofthe shank and spaced below the T-hea'd.

4. A printing slug comprising a T-head and a shank, the material of theshank adjacent to its lower edge and some distance below the T-headbeingpressed in opposite directions to make lateral projections on eachside, giving the effect of a grooved slug.

5. A line slug having a longitudinal a longitudinal T-head' thereon,characters on the T-head, the shank at its lower end and for somedistance above that end being made wavy to produce projections onopposite sides of the shank, said projections being spaced a materialdistance below the under face ofthe T-head.

6. A line slug having a T-head, a shank and wavy ribs on opposite sidesof the shank spaced from the head, projections on the rib at one sidecoming opposite indentations of the rib on the other side.

7. A line'slug comprising an 'overhanging head, a shank, and ribs at thebottom of the slug on opposite sides of the shank, said ribs beingopposite each other and each rib having projections extending beyond thesides of the rib beneath the shank, the projections of one rib comingopposite the indentations of the opposite rib.

8. As a new article ofmanufacture, a line slug having a head with anoriginal cast under surface, ashank depending from the head, and wavyribs on opposite sides of the shank somedistance below the head, theprojections of the ribs of one side being opposite the indentations ofthe rib on the other side.

9. A line slug comprising an overhanging head, a shank, interrupted ribson'the opposite sides of the shank, each rib consisting of projectionsand indentations, the pro- In testimony whereof, I hereunto affix myjections on one side being opposite the insignature in the presence oftWo Witnesses. dentations on the other.

10. A line slug comprising an overhang- WILLIAM 5 ing head, a shank,and-outwardly pressed Witnesses: v

projections on each side of the shank oppo E. F. KOENIG,

site indentations into the shank. D. C. BLACKIE.

